Jet condenser



Nov.- 17 l925 H. F. SCHMIDT ET Al.

JETy CONDENSE R Filed De. s, 1920 ATTORNEY Patented Nov. 17, 1925's.

UNITED STATES PATENT OFFICE.

HENRY E. SCHMIDT AND nAvInw. n. MORGAN, or swanrnivionn, PENNSYLVAIA,

ASSIGNORS T0 WESTINGHOUSE ELECTRC AND MANUF CORPORATION OF PENNSYLVANA.

'ET CONDENSER.

Application filed December 3, 1920. Serial No. 428,052.

" bines, the specific construction proposed having the still further advantages of han.- dling large volumes of cooling water in an efficient and compact manner and also in entraining large amounts of air with the cooling water, thus permitting the use of air removing apparatus of relatively small capacities.

In the accompanying drawing, Fig. l is a side view, partially in section and partially in elevation of a jet condenser constructed in accoidance with our invention, and Fig. 2 is a view in section through vthe jet condenser on a plane cutting the propeller p and discharges it" into any suitable recepnormally to its axis of rotation.

Heretofore, in the construction of jet condeiisers, it has been usual toA provide avmixing chamber having at its lower end a water removal pump of the centrifugal type; this water removal pump rotates vin a vertical plane.

lVith the use 0f condensers of larger capacities, the rotor diameter of the water removal pump has largely increased, and as this pump must have a certain degree of submergence in order 'to operate satisfactorily, it has been necessary to construct the condenser of considerable overall height, an undesirable feature where the condenser is to be used in spaces of restricted head room, as, for example, within turbine foundations, it being obvious that tall, slender foundation piers are not as rigid as those of the short, compact type.

In accordance with ourk invention, we provide a propeller pump at the bottom of the ac'runine COMPANY, A

propeller pump, the fluid *flowingv there through may be caused to entrain relatively large amounts of air, thus reducing the load on the air removal means. y

Referring to the accompanying drawing for a more detailed understanding of our invention, a jet condenser is shown provided .with a nozzle chamber 5 surrounded by a water box 6 and surmounting a mixing space, as is well known and understood.

rThe mixing space 7 is provided with a throat portion 8 at the bottom thereof and a propeller pump 9 is varranged to rotate therein, this pump being provided with a flow line hub l() of the usual design and being driven by any suitable means, such, for example, as an impulse turbine l1.

The propeller chamberis provided with a conical stream liney bottoml 12 which directs the water delivered `by the propeller into an annulardijifuser 13.

A collecting chamber 11i, preferably of volute conforma tion, receives the water from the diffuser l?) tacle at atmospheric pressure. members 13 are secured radially within the diiuser 13 in order to minimize swirling` or eddying motion of the condensate discharged from the propeller pump.

The operation of the structure thus described will be apparent from the foregoing. The condenser is intimately associated with a prime mover, such, for example, as a turbine, being connccted directly thereto, and the exhaust steam enters the nozzle chamber 5 where it is brought into intimate contact with water issuing from the water box 6. The condensate rains down through the space 7 and collects at the bottom thereof, being rapidly lremoved by lthe propeller 9 and ejectedA through the conduit 14. The degree of submergence of the propeller 9 is not so great but what considerable, agitation of the water thereover takes place, thus y considerable amounts Partition of airv and other non-condensible gases and discharging them to the hotwell. AAir removv ing apparatus 15 of any'suitable type may slightly be provided, if desired.

W'e Ydesire to direct particular attention to the accessibility of the moving parts of our condenser. Thus the turbine or.other pump driving means may be' disconnected by loosening the fastening bolts 1G and by dropping the structure carried thereby, or the entire moving system, embodying the vpropeller driving means and the propeller, may be removed as a unit for inspection, repair and replacement.

lVhile we have shown our invention in but one form, it will be obvious to those skilledfin the art that it is not so limited, but is susceptible of various other changes and modifications, without departing from t-he spirit thereof, and we desire, therefore, that only such limitations .shall be placed thereupon as Vare imposed by the priorrart .or as are specically set forth in the appended claims.

That we claim is:

l. A combined jet condenser and condensate extraction pump therefor comprising a mixing chamber, means providing a discharge throat at t-he bottom thereof, a propeller member rotatable in said throat, and means for discharging the condensate delivered by said propeller member.

2. A combined jet condenser and condensate extraction pump therefor comprising a mixing chamber, a propeller rotatable in the lower portion of the mixing chamber in a substantially horizontal plane, and means for discharging the condensate delivered by said propeller' member.

A combined jet condenser and condensate extraction pump therefor comprising a mixing chamber, a propeller rotatable in the lower portion of the mixing chamber in a substantially horizontal plane, means for discharging the condensate delivered by said propeller member, Ysaid propeller `being bodily removable from the condenser.

et. A combined jet condenserV and conden sate extraction pump therefor comprising a mixing chamber, a propeller rotatable in the lower portion of the mixing chamber in a substantially horizontal plane, means for discharging the condensate delivered by said propeller member, driving means for said propeller, said propeller with its associated driving means being removable from the condenser as a unit.

5. In a combined jet condenser' and condensate extraction pump therefor, the combination with a mixing chamber, of means providing a discharge throat at the bottom thereof, and a condensate pump embodying a propeller member rotatable in said throat and driving means for said pump member.

6. In a combined jet condenser and condensate extraction pump therefor, means providing a mixing chamber, means providing a vertically opening condensate discharging throat at the bottom thereof, and a condensate pump embodying a propeller member arranged to rotate in a substantially horizontal plane within said throat. i

7. ln a combined jet condenser, and condensate extraction pump therefor, the combination with a mixing chamber, yof means providing a discharge throat at the bottom thereof, a condensate pump Aembodying' a propeller member rotatable in said throat and driving meansfor said pump member, and a plurality of radially-extending discharge members beneath said propeller member.

8. In a combined jet condenser and condensate extraction pump therefor, means providing a mixing chamber, means providing a vertically opening condensate discharging throat atthe bottom thereof, and a condensate pump embodying a propeller' member arranged to. rotate in a substair tially horizontal plane within said throat, and discharge means disposed beneath said propeller member and arranged to prevent swirling and eddying motion in the discharged condensate.

9. In a combined jet condenser and condensate extraction'pump therefor, the combination with a mixing chamber, of a downwardly opening discharge throat at the bottom thereof, a propeller member arranged to rotate in said throat in aV substantially horizontal plane, a stream line hub member projecting -above said member, and driving means for said propeller.

n testimony whereof, we have hereunto set our' names this 30th day of November 1920.

D. lV. R. HENRY CIL 

